import axios from 'axios'
import { Loading, Message } from 'element-ui'
import store from '@/store'
import { getToken, getTenantId, removeToken } from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import { blobValidate, tansParams, getTenantEnable } from '@/utils/ruoyi'
import cache from '@/plugins/cache'
import { saveAs } from 'file-saver'

let downloadLoadingInstance
// 是否显示重新登录
let isReLoginShow

axios.defaults.headers['Content-Type'] = 'application/json;charset=utf-8'
// 创建axios实例
const service = axios.create({
    // axios中请求配置有baseURL选项，表示请求URL公共部分
    baseURL: process.env.VUE_APP_BASE_API,
    // 超时 10秒
    // timeout: 10000
    timeout: 60000
})

// request拦截器
service.interceptors.request.use(config => {
    // 是否需要设置 token
    const isToken = (config.headers || {}).isToken === false
    // 是否需要防止数据重复提交
    const isRepeatSubmit = (config.headers || {}).repeatSubmit === false
    if (getToken() && !isToken) {
        config.headers['Authorization'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
        // config.headers['ElectricityManagement'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
    }
// 设置租户
    if (getTenantEnable()) {
        const tenantId = getTenantId()
        if (tenantId) {
            config.headers['tenant-id'] = tenantId
        }
    }
    config.headers['identifier'] = store.getters.identifier

    // get请求映射params参数
    if (config.method === 'get' && config.params) {
        let url = config.url + '?' + tansParams(config.params)
        url = url.slice(0, -1)
        config.params = {}
        config.url = url
    }
    if (!isRepeatSubmit && (config.method === 'post' || config.method === 'put')) {
        const requestObj = {
            url: config.url,
            data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
            time: new Date().getTime()
        }
        const sessionObj = cache.session.getJSON('sessionObj')
        if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
            cache.session.setJSON('sessionObj', requestObj)
        } else {
            const s_url = sessionObj.url                  // 请求地址
            const s_data = sessionObj.data                // 请求数据
            const s_time = sessionObj.time                // 请求时间
            const interval = 1000                         // 间隔时间(ms)，小于此时间视为重复提交
            if (s_data === requestObj.data && requestObj.time - s_time < interval && s_url === requestObj.url) {
                const message = '数据正在处理，请勿重复提交'
                console.warn(`[${s_url}]: ` + message)
                return Promise.reject(new Error(message))
            } else {
                cache.session.setJSON('sessionObj', requestObj)
            }
        }
    }
    return config
}, error => {
    console.log(error)
    Promise.reject(error)
})

// 响应拦截器
service.interceptors.response.use(res => {
        // 未设置状态码则默认成功状态
        const code = res.data.code || 200
        // 获取错误信息
        const msg = errorCode[code] || res.data.msg || errorCode['default']
        // 二进制数据则直接返回
        if (res.request.responseType === 'blob' || res.request.responseType === 'arraybuffer') {
            return res.data
        }
        if (code === 401 || code === 501) {
            removeToken()
            Message({
                message: '无效的会话，或者会话已过期，请重新登录',
                type: 'error'
            })
            location.href = '/login'
            return Promise.reject('无效的会话，或者会话已过期，请重新登录')
        } else if (code === 500) {
            Message({
                message: msg,
                type: 'error'
            })
            return Promise.reject(new Error(msg))
        } else if (code !== 200) {
            Message({
                message: msg,
                type: 'error'
            })
            return Promise.reject('error')
        } else {
            return res.data
        }
    },
    error => {
        console.log('err' + error)
        let { message } = error
        if (message === 'Network Error') {
            message = '后端接口连接异常'
        } else if (message.includes('timeout')) {
            message = '系统接口请求超时'
        } else if (message.includes('Request failed with status code')) {
            message = '系统接口' + message.substr(message.length - 3) + '异常'
        }
        Message({
            message: message,
            type: 'error',
            duration: 5 * 1000
        })
        return Promise.reject(error)
    }
)

export function getBaseHeader() {
    return {
        'Authorization': 'Bearer ' + getToken(),
        'tenant-id': getTenantId()
    }
}

// 通用下载方法
export function download(url, params, filename) {
    downloadLoadingInstance = Loading.service({
        text: '正在下载数据，请稍候',
        spinner: 'el-icon-loading',
        background: 'rgba(0, 0, 0, 0.7)'
    })
    return service.post(url, params, {
        transformRequest: [(params) => {
            return tansParams(params)
        }],
        headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
        responseType: 'blob'
    }).then(async(data) => {
        const isLogin = await blobValidate(data)
        if (isLogin) {
            const blob = new Blob([data])
            saveAs(blob, filename)
        } else {
            const resText = await data.text()
            const rspObj = JSON.parse(resText)
            const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
            Message.error(errMsg)
        }
        downloadLoadingInstance.close()
    }).catch((r) => {
        console.error(r)
        Message.error('下载文件出现错误，请联系管理员！')
        downloadLoadingInstance.close()
    })
}

export default service
